170825 has 6 divisors (see below), whose sum is σ = 211854. Its totient is φ = 136640.

The previous prime is 170813. The next prime is 170827. The reversal of 170825 is 528071.

Added to its reverse (528071) it gives a square (698896 = 836²).

170825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 256 + 170569 = 16^2 + 413^2 .

It is not a de Polignac number, because 170825 - 2⁴ = 170809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 170825.

It is not an unprimeable number, because it can be changed into a prime (170827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3392 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (35309).

2¹⁷⁰⁸²⁵ is an apocalyptic number.

It is an amenable number.

170825 is a deficient number, since it is larger than the sum of its proper divisors (41029).

170825 is an equidigital number, since it uses as much as digits as its factorization.

170825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843 (or 6838 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 170825 is about 413.3098111587. The cubic root of 170825 is about 55.4860501152.

Adding to 170825 its reverse (528071), we get a palindrome (698896).

The spelling of 170825 in words is "one hundred seventy thousand, eight hundred twenty-five".